The World Has Been Bugged I Will Fix It
Please Stand By

Basement-you can build anything you want but look out for the blocks poking out from the ceiling they are walk ways so no break
1st floor-Main entrance
2nd floor-offices
3rd floor-caffetiria
4th floor-evidence
5th floor-post/illegal objects confiscation
6th floor-security/defense ministry offices
7th floor-interrigation rooms
8th floor-holding cells
Roof-helipad
There is also a rail system to an enchanting room Its with dogs as well
I'm listing from memory so excuse me if i'm wrong but it does include these functions it also has a control tower.

Also Please Comment On What I Should Do Next

Additional Notes

The roofless area in front of the control tower used to be a snake enclosure but i turned vanilla
but if you want get the torch levers mod an mo creatures.

The air force plane is found by the other rail line from the airport